733599 Sir Hiram Maxim\'s captive airships at the Italian Exhibition, which took place in 1904 at Earl\'s Court in London (b/w photo) by English Photographer, (20th century); Private Collection; (add.info.: Sir Hiram Maxim\'s captive airships at the Italian Exhibition, which took place in 1904 at Earl\'s Court in London. Sir Hiram Stevens Maxim was an American-born inventor (1840-1916).); Look and Learn / Peter Jackson Collection; English, out of copyright.